I'm trying to display a paragraph in a tooltip when I hover a certain picture box. The problem is, the tooltip takes that paragraph, and spans it on one line, all across my screen. How can I make it so that it takes a smaller, more readable area?
or, maybe you have another technique to achieve the same thing, but without the tooltip function?
Add line breaks to your string.
string tooltip = string.Format("Here is a lot of text that I want{0}to display on multiple{0}lines.", Environment.NewLine);
You don't need to use code to include \r\n characters.
If you click on the dropdown arrow to the right of the ToolTip property value, it displays a multiline edit box.
Just press Enter to create a new line.
Here's something you can use:
private const int maximumSingleLineTooltipLength = 20;
private static string AddNewLinesForTooltip(string text)
{
if (text.Length < maximumSingleLineTooltipLength)
return text;
int lineLength = (int)Math.Sqrt((double)text.Length) * 2;
StringBuilder sb = new StringBuilder();
int currentLinePosition = 0;
for (int textIndex = 0; textIndex < text.Length; textIndex++)
{
// If we have reached the target line length and the next
// character is whitespace then begin a new line.
if (currentLinePosition >= lineLength &&
char.IsWhiteSpace(text[textIndex]))
{
sb.Append(Environment.NewLine);
currentLinePosition = 0;
}
// If we have just started a new line, skip all the whitespace.
if (currentLinePosition == 0)
while (textIndex < text.Length && char.IsWhiteSpace(text[textIndex]))
textIndex++;
// Append the next character.
if (textIndex < text.Length)
sb.Append(text[textIndex]);
currentLinePosition++;
}
return sb.ToString();
}
Have you tried inserting newlines \n into the tooltip, to get it to span multiple lines?
You can't add the \r\n in the tooltip property of the control. It simply doesn't work. To resolve you issue, simply add the tooltip in the code itself typically in the InitializeComponent method.
I.E.: (c#, winform example)
this.mToolTip.SetToolTip(this.tbxControl,
"This is the first line of the tooltip.\r\n" +
"This is the second line of the tooltip.");
Using new line worked for me
System.Environment.NewLine
If you enter a tool tip in the DataGridView properties control for columns, and I suspect other WinForms control designers, and include a "\r\n" in the tool tip, you will see "\\r\\n" in the tool tip that is displayed when you run the code. This is because the tool tip property is already a string, and the designer interprets the code from the tool tip entered in the properties window as "\\r\\n". You can go to the .Designer.cs file, manually edit the file, and replace "\\r\\n" with "\r\n". You will then see the tool tip with the line break when the application runs. If you go back and look at the value of the tool tip in the designer, you will see the tool tip without the line break, but it will be there, and will not be re-transformed to "\\r\\n" by the designer. Despite a comment made earlier, you only need the "\n". The "\r" is not necessary.
Related
i have a Trackbar and want it to add the Current Value to a richtextbox Text without replacing the whole Text Line
richTextBox1.Rtf = richTextBox1.Rtf.Replace("aimbot_aimtime=85.000000", "aimbot_aimtime=" + trackbarpercent.Text + ".000000");
(i get the Value from my Label)
Thats what im using right now but it only Replaces it if the Text is "aimbot_aimtime=85.000000"
i want it to add the new Value after "aimbot_aimtime=NEWVALUE" but i cant get it to work atm
#Marc Lyon
I think a better way for me is to Replace the Line itself cause its always Line 7
Got it working, thanks to all who helped :)
void changeLine(RichTextBox RTB, int line, string text)
{
int s1 = RTB.GetFirstCharIndexFromLine(line);
int s2 = line < RTB.Lines.Count() - 1 ?
RTB.GetFirstCharIndexFromLine(line + 1) - 1 :
RTB.Text.Length;
RTB.Select(s1, s2 - s1);
RTB.SelectedText = text;
}
private void trackbarpercent_Click(object sender, EventArgs e)
{
changeLine(richTextBox1, 7, "aimbot_aimtime=" + aimtimetrackbar.Value + ".000000");
}
You have to know what the value is in order to replace it, which is why it only works when the value is your default value of 85.
In order to replace the text with the new text, you will have to track the previous value somewhere to use in your replacement. This means a field in your form, a property in some class. Let's say you create an int field on your form (myForm) called oldAimbot_aimtime. Every time the slider changes, put old value into this field. now your code becomes:
var prompt = "aimbot_aimtime=";
var oldvalue = string.Format("{0}{1}", prompt, myForm.oldAimbot_aimtime);
var newvalue = string.Format("{0}{1}", prompt, {NEWVALUE}.Format("#.######");
richTextBox1.Rtf = richTextBox1.Rtf.Replace(oldvalue, newvalue);
This code is off the top of my head and may not work exact, but it should replace the value. What is the value of using a richtextbox on a config screen? Can you post a screenshot?
OK, I see the screenshot. Ethics aside (not sure there is such a thing as a legit aimbot). You are using the richtextbox presumably because it was the easiest control for you to style...
Where you use the richtextbox is probably better suited to a GridView, ListBox, maybe even a treeview where you have finer control over each element.
If you want to use the richtext, write code which emits each option, then you can obtain exact values to use in rtf.Replace()commands
Hope this helps.
I am building a report using StringBuilder and the details of it to be properly intended and aligned
for which i will be using
private static int paperWidth = 55; //it defines the size of paper
private static readonly string singleLine = string.Empty.PadLeft(paperWidth, '-');
StringBuilder reportLayout;
reportLayout.AppendLine("\t" + "Store Name");
I want Store Name in center and many such more feilds by use of \t
Thanks in Advance.
EDIT
I want to print like. Store Name in center
If you're simulating what tabs look like at a terminal you should
stick with 8 spaces per tab. A Tab character shifts over to the next
tab stop. By default, there is one every 8 spaces. But in most shells
you can easily edit it to be whatever number of spaces you want
You can realize this through the following Code:
string tab = "\t";
string space = new string(' ', 8);
StringBuilder str = new StringBuilder();
str.AppendLine(tab + "A");
str.AppendLine(space + "B");
string outPut = str.ToString(); // will give two lines of equal length
int lengthOfOP = outPut.Length; //will give you 15
From the above example we can say that in .Net the length of \t is
calculated as 1
A Tab is a Tab and its meaning is created by the application that renders it.
Think of a word processor where a Tab means:
Go to the next tab stop.
You can define the tab stops!
To center output do not use Tabs, use the correct StringFormat :
StringFormat fmt = new StringFormat()
{ Alignment = StringAlignment.Center, LineAlignment = StringAlignment.Center };
This centers the text inside a rectanlge in both directions:
e.Graphics.DrawString(someText, someFont, someBrush, layoutRectangle, fmt);
or something like it..
But it looks as if you want to embed the centering inside a text.
This will only work if you really know everything about the output process, i.e. the device, the Font and Size as well as the margins etc..
So it will probably not be reliable at all, no matter what you do.
The best alternative may be to either give up on plain text or use a fixed number of spaces to 'mean' 'centered' and then watch for this number when you render.
If you don't have control over the rendering, it will not work.
how can I update just one line text in richtextbox?
String[] lines = richTextBox8.Lines;
lines[2] += " ";
richTextBox8.Lines = lines;
I am using this code part for update second line of richtextbox but it scans all my richtextbox lines and it takes many times.
so I want to update line text for 1 line.
How can I do that?
Note that you must never touch the Text or the Lines directly or all previous formatting gets messed up.
Here is a function that will solve the problem without messing up the formatting:
void changeLine(RichTextBox RTB, int line, string text)
{
int s1 = RTB.GetFirstCharIndexFromLine(line);
int s2 = line < RTB.Lines.Count() - 1 ?
RTB.GetFirstCharIndexFromLine(line+1) - 1 :
RTB.Text.Length;
RTB.Select(s1, s2 - s1);
RTB.SelectedText = text;
}
Note the in C# the numbering is zero beased, so to change the 1st line you call changeLine(yourrichTextBox, 0, yourNewText);
To only modify (not replace) the line you can simply access the Lines property; just make sure never to change it!
So to add a blank to the 2nd line you can write:
changeLine(yourrichTextBox, 1, yourrichTextBox.Lines[1] + " ");
I am very new to C#. I learn best by experimentation, but of course, I will get completely stumped sometimes. I will try to explain my problem the best I can with what knowledge of the programming language I currently have.
I have been trying to create a simple tool to edit/add lines of text into a text file. I have done much researching, especially on this site, and all the information has been extremely helpful. My problem though, is adding text to both sides to a single line of text within a multi-line textbox.
So lets say I have a textbox with 2 existing lines; I want to add some text next to both sides of to one of one lines, and do the same to the next one. Here is an example of what the text would look like before and after a button is hit:
Before
is not the same as is different than
After
A is not the same as B A is different than B
The two lines in "Before" would be in textBox1 (multiline), and would be inserted to richTextBox1 as "After".
Hopefully I have explained it clearly enough, I do not know where to begin with this.
Thank you.
If you know which index you have to update the text, then you should be able to inset the value directly using insert function exposed by string class
Example:
//Get the text box value
var formatedTextboxString = this.textbox1.Text;
formatedTextboxString = formatedTextboxString.Insert(0, "A ");
formatedTextboxString = formatedTextboxString.Insert(21, "B");
//Place the formated text back to the richTextBox
this.richTextBox1.Text = formatedTextboxString;
Try
"{0} is not the same as {1} {2} is different than {3}"
In textbox1. Then use:
textbox2.Text = String.Format(textbox1.Text, A, B, A, B);
In case if you have multiline textbox:
var list = new List<string>(textBox1.Lines);
for (int i = 0; i < list.Count; ++i)
{
list[i] = "A" + list[i] + "B";
}
textBox1.Lines = list.ToArray();
string[] arr = textBox1.Text.Split(Environment.Newline);
//then loop over each line and add whatever you want :-
foreach (string s in arr)
{
//add here
}
I guess this is good enough hint to start with :)
Following code, credit: Guffa.
Hello All,
I'm trying to add controls to a Form at runtime based on the information found in a Plain Text File. The structure? of the text file is always the same, and will not change. Example:
File.txt:
Label
"This is a label"
320, 240
Explanation:
Control
Text
Location
The following code, provided to me by Guffa, doesn't cause any errors or anything, but at the same time, nothing happens at all. And I'm not sure why... Can somebody please explain why the label doesn't get created and added to the form with the right info attached to it?
MatchCollection lines = Regex.Matches(File.ReadAllText(fileName), #"(.+?)\r\n""([^""]+)""\r\n(\d+), (\d+)\r\n");
foreach (Match match in lines) {
string control = match.Groups[1].Value;
string text = match.Groups[2].Value;
int x = Int32.Parse(match.Groups[3].Value);
int y = Int32.Parse(match.Groups[4].Value);
Console.WriteLine("{0}, \"{1}\", {2}, {3}", control, text, x, y);
if(control == "Label")
{
Label label = new Label();
label.Text = text;
canvas.Controls.Add(label); // canvas is a Panel Control.
label.Location = new Point(x, y);
}
}
I hope that I have clearly explained my situation. Any help at all would be greatly appreciated.
Thanks for taking the time to read.
jase
My guess is that your file doesn't have quite the right format. If you step into the code, does it match anything?
If so, what gets printed to the console?
Have you tried it with the exact sample shown in the question? While I haven't tried it in a form, I've tried the rest of the code above with the sample file, and it works fine.
Personally I don't think I'd use a regex to match all of the lines like this - it makes it harder to diagnose issues - but it should work okay if the file is correct. You say you don't understand the regex provided - that's another good reason not to use it, to be honest. Even if it's entirely correct, it's not a good idea to use code that you don't understand - you won't be able to maintain it.
I would personally just read the lines three at a time and then deal with them that way. Something like this:
private static readonly Regex LocationPattern = new Regex(#"^(\d+), (\d+)$");
...
using (TextReader reader = File.OpenText(filename))
{
while (true)
{
string control = reader.ReadLine();
string text = reader.ReadLine();
string location = reader.ReadLine();
if (control == null)
{
break;
}
if (text == null || location == null)
{
// Or however you want to handle this...
throw new InvalidConfigurationFileException
("Incorrect number of lines");
}
if (text.Length < 2 || !text.StartsWith("\"") || !text.EndsWith("\""))
{
// Or however you want to handle this...
throw new InvalidConfigurationFileException
("Text is not in quotes");
}
text = text.Substring(1, text.Length - 2);
Match locationMatch = LocationPattern.Match(location);
if (!locationMatch.Success)
{
// Or however you want to handle this...
throw new InvalidConfigurationFileException
("Invalid location: " + location);
}
// You could use int.TryParse if you want to handle this differently
Point parsedLocation = new Point(int.Parse(match.Groups[1].Value),
int.Parse(match.Groups[2].Value));
// Now the rest of the code before
}
}
As you can tell, it's a lot more code - but each part of it is relatively simple. Regular expressions are powerful if you're happy to handle them, but unless something is complicated to express "longhand" I often find it easier to maintain the longer way. Just a personal preference though.
Blind guess: I see the last \r\n in the regex is not optional. Possible that your input file is missing a return character after the last line?
Additional note about sucking at regular expressions: there are some tools that will help you experiment with regular expressions, which might be useful, for example, to understand what's going on in this particular case. I always use Expresso, which among other things analyzes the structure of the regular expression you provide and explains what it does.
Another possibility is that you forgot to add canvas (Panel control) to another control so the chain of controls inside canvas is not displayed and you would maybe not see that the canvas itself doesn't display. Which guess is the best? :-)